Improvement in rocking-chairs



0. BRADA. 4 OOking-Ghair.

No. 196,423. Patented Oct. 23,1877.

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UNITED STATES PATENT QFFIOEO CHARLES BRADA, on NEW YORK, N. v.

IMPROVEMENT IN ROCKING-CHAIRS.

Specification forming part of Letters Patent No. 196,423, dated October23, 1877; application filed August 15, 1877.

To all whom it may concern Be it known that I, CHARLES BRADA, of thecity and county of New York, in the State of New York, have invented anew and useful Improvement in Rocking-Chairs, which improvement is fullyset forth in the following specification, reference being had to theaccompanying drawings, in which Figure 1 represents a longitudinalvertical section in the plane as at, Fig. 2. Fig. 2 is a horizontalsection in the plane y y, Fig. 1. Fig. 3 is a detached section of one ofthe springs and its supports on a larger scale than the previousfigures.

Similar letters indicate corresponding parts.

This invention consists in the combination, in a rocking-chair, of aseat provided with rockers, asupporting-frame, two coiled springs woundround a rod secured in the supportingframe, each of said springs beingprovided with two arms, which extend in opposite directions, and arehooked to brackets secured to the rocking seat, and two stops, (one foreach spring which are fastened to the supporting-frame, and co-operatewith the rear arms of the springs, so that by the action of said springsthe rocking seat is held down squarely upon the supporting-frame, andthat in rocking backward the springs are wound up, and thereby acomfortable and easy motion of the rockingchair is produced. Between thecoiled springs and their supporting-bar are placed sleeves ofindiarubber or other elastic material, whereby the rolling of thesprings on the supporting-bar is checked to a certain extent, the actionof said springs during the rocking motion of the chair is increased, andall noise from contact of the springs with their metallic supporting-baris avoided.

In the drawing, the letter A designates the seat of my rockingchair,which is provided with rockers B. These rockers rest upon the sidepieces of the supporting-frame C. In this supporting-frame isfirmlysecured a transverse bar, D, round which are coiled two springs,E. Each of these springs is provided with two arms, a b, which extend inopposite directions, and which are hooked on, or otherwise secured to,brackets-c, that are fastened to the inner sides of the rockers B, andextend down below the top edges of the side pieces of thesupporting-frame, so that they prevent a lateral displacement of theseat on said frame. The springs are so adjusted that by the strain oftheir arms a -b the seat A is squarely depressed upon thesupporting-frame; but in order to increase the security of the positionof the-seat 011 its supporting-frame, two lugs or ears, (1, are fastenedto the inner surfaces of the rockers, (one 011 each), and made to extenddown over the inner surfaces of the side pieces of the frame 0. Theseears are provided with heart-shaped openings, which straddle the bar D,and effectually prevent the seat from being lifted or thrown off fromits supporting-frame.

With the rear arm 7) of each of the springs E is combined a strap, 0, sothat in rocking backward said rear arm comes in contact with its stop,the tension of the spring is gradually increased, and the backwardmotion of the seat is checked without danger of upsetting the chair byrocking back too far. ward no such stop is needed, since the weight ofthe person occupying the chair is brought to bear principally on therear portion of the seat and on the back of the chair.

In the example shown in the drawings the straps e are made in the formof |-shaped sup ports, which are secured to the side pieces of thesupporting frame, and form additional bearings for the transverse bar D.The form of these straps may, however, be changed in various wayswithout deviating from my invention.

Between the springs E and the transverse bar D are placed sleeves f, ofindia-rubber or other elastic material, the springs being firmly woundon said sleeves, so that by the friction between. the sleeves and thebar D, the rolling of the springs on said bar is checked, and theiraction during the rocking motion of the chair is increased. Furthermore,by said sleeves all noise from contact of the springs with theirmetallic supporting-bar is avoided.

What I claim as new, and desire to secure by Letters Patent, is v 1. Thecombination of the rockers B, provided with thedownwardly-extendingslotted plate (I, the sidepieces O, and cross-arm D,passing through the slots in said plate, as described.

2. The combination of the cross-arm D, loop- In rocking forstraps e, andcoiled spring E, having arms a I), connected to the rockers B,substantially as described.

3. The combination, with the rocking seat A, the supporting-frame B, thecoiled springs E, and their supporting-bar D, of sleeves f, ofindie-rubber or other elastic material, substantially as and for thepurpose set forth.

In testimony that I claim the foregoing I-

